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You might try disconnecting the memory wire and doing the reset again. If your head unit is not where u can access the wiring harness, you can disconnect the battery. This should clear any settings you have in the radio. Of course it will require resetting the clock, stations, etc...

There is no need to pull the radio from the dash to reset. There is a reset button above the aux in put behind the usb door. You will need a paper clip or a tip of a ball point pen. Once reset you will need to reprogram all of your setting (FM stations, clock) as this will wipe out the memory. To remove the radio from the dash will depend on what kind of car its in. Some (Toyota, Niss.) use the factory brackets to mount in the dash. IF this is the case the dash will need to be disassembled. For the kit installs you will need to remove the trim ring around the outside of the face of the radio. Then the keys will be inserted on each side of the radio releasing the clips then the radio can be slid out.

I spent the better part of an hour trying to figure out how to get the "Clk Adj" screen on the KDC-MP228. Here is the solution (dont waste your time reading the manual, it does not explain this). First, I had screwed up my settings so I did a factory reset (hold in the reset button). Then, you need to turn off Demo Mode (in standby click the Menu button and then use the control button to navigate to "Demo On". Hold the control button in to turn Demo on or off (this is different from all of the other controls in the manual). Now that Demo is off, click Menu button again and use the Control button to navigate through the options, one of which is "Clk Adj". At that point, you can follow the instructions in the manual (Hold in Control button until the clock blinks (approx 2 seconds), then use the FM/AM buttons to change the Hours and the << >> buttons to change the Minutes). Press the Control button again to save your changes. I cannot believe how difficult it was to set the clock on this device, someone should smack the developer who wrote that code.

IF YOU DID NOT PRESS THE RESET BUTTON NEX TO THE USB PLUG, DO IT. IT WILL REINITIATE THE DEVICE TO THE FACTORY; YOU WILL HAVE TO ADJUST THE CLOCK.I DID BECAUSE IT WAS WORKING AT FIRST.( PAGE 3 OF THE MANUAL)CLAUDE